Moeller Brass Bulkhead Fuel Fitting – 1/4" Female NPT (03343510)
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Brass Bulkhead Fuel Fitting – 1/4" Female NPT – Moeller 03343510
A heavy-duty brass bulkhead fitting designed to create a sealed, threaded fuel passage through a boat’s hull, deck, or divider panel. The 03343510 provides a 1/4" female NPT port for connecting threaded fuel system components on either side of the panel — built to OEM specifications with a robust brass construction for long-term reliability in demanding marine environments.
Best Use Case
Use this fitting when routing a fuel line through a structural panel and a threaded NPT connection is required on the through-panel port. The 1/4" female NPT thread accepts standard 1/4" NPT male fittings, making it compatible with a wide range of fuel system components including fuel valves, filters, and threaded line fittings. Ideal for custom fuel system builds, tank installations, and fuel line re-routes where a clean, sealed, threaded through-panel connection is needed. For a 3/8" barb-style bulkhead fitting, see the Moeller 3/8" Bulkhead Mount Fuel Fitting (03321010). For a 1/4" NPT male tank fitting, see the Seachoice 1/4" NPT Male Tank Fitting.
Key Features
- Brass construction — corrosion-resistant and built for long-term marine fuel system use
- 1/4" female NPT threads — accepts standard 1/4" NPT male fittings on both sides
- Bulkhead mount design — routes fuel connections cleanly through hull, deck, or divider panels
- Includes mounting hardware for a secure, sealed panel installation
- Substantial assembly at 907g — built for permanent, high-integrity installations
- OEM-specification build quality
⚠ Not for use in potable water systems.
Parts Desk Insights
This is a premium brass bulkhead fitting — the brass construction and 1/4" female NPT threading make it the right choice when a permanent, high-integrity through-panel fuel connection is needed. Key pre-sale checks: (1) confirm the customer needs a 1/4" NPT thread — not 3/8" NPT; (2) confirm they need a female NPT port (accepts a male NPT fitting), not a male NPT port; (3) confirm the panel thickness is within the fitting’s mounting range (check the product spec sheet for min/max panel thickness). Use fuel-compatible thread sealant (PTFE tape or thread compound) on any male NPT fittings threaded into this fitting. For a lighter-duty or barb-style bulkhead option, see the Moeller 3/8" Aluminum Bulkhead Fitting (03321010). For engine-brand quick-connect fittings, see the Fuel Fittings & Connectors collection.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.